CN1945379A

CN1945379A - Optical plan for automatic stereo display

Info

Publication number: CN1945379A
Application number: CN 200610147130
Authority: CN
Inventors: 朱向冰; 蒋峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-06
Filing date: 2006-11-06
Publication date: 2007-04-11

Abstract

This invention relates to an automatic three-dimensional optical displayer, which uses a small lens and the light source to achieve a more brightly images with a low power consumption. In the invention, it takes a number of small single light-sources as the automatic three-dimensional display backlight source to replace the cold cathode fluorescent lamp which can be regulated and switched independently, and it use the combination of the lens and cylindrical lens (or slit, long shading) to control the light-source to focus the light in the vicinity of the eyes, so it improves the brightness with a lower power consumption.

Description

The optical plan of automatic stereoscopic display device

Technical field

The present invention relates to a kind of optical plan of automatic stereoscopic display device,, effectively reduce power consumption, the method for the brightness of image that the raising user sees by means of lens and small light source.

Background technology

Use automatic stereoscopic display device, the user does not need utility appliance such as anaglyph spectacles, directly can see different images for two, and bore hole just can produce stereoscopic sensation.At present, use in the automatic stereo display technique the most successful, to use maximum technology paths be improvement to the common liquid crystals display.In the liquid crystal front or the back add a coke discharging apart from very little post lens (perhaps slit or long shading strip), control radiation direction, the light of one part of pixel mainly is mapped to eyes, the picture on these pixels can only be seen by eyes.The light that same another part pixel is sent mainly arrives another eyes, and the another eyes can only be seen another width of cloth picture, and two width of cloth pictures are variant slightly, and human brain merges the different image of two width of cloth, produces stereoscopic sensation and distance perspective.But in this class technology path, a large amount of light have been wasted, and power consumption is big, and the brightness of image that the user sees is low, are difficult to use under strong surround lighting; Only just stereo-picture can be seen simultaneously, the needs of high-quality stereo display can not be satisfied in certain location.Therefore how reducing power consumption and increasing brightness of image is important problem.

Summary of the invention

In order to overcome the existing shortcoming that the automatic stereoscopic display device power consumption is big, brightness is low, the present invention proposes a kind of scheme of new automatic stereoscopic display device optical system, this scheme not only can reduce the power consumption of display, and the brightness that can improve automatic stereoscopic display device effectively, can also be according to user's position, change the direction of light, adapt to the needs that diverse location is watched.

The technical solution adopted for the present invention to solve the technical problems is: increase convergent lens in three-dimensional display, many small light sources are arranged in together, effectively make up with convergent lens, after radiation direction controlled, allow light through elements such as organ timbering lens (or slit or long shading strip or their combination), liquid crystal panels again, make user two soon to different pictures.

Organize the light process convergent lens that small light source sends by list, if simplify the influence of post lens (or slit, long shading strip or their combination), light will mainly concentrate near two of people, through (or other element such as slit or long shading strip) behind the post lens light is disperseed, right and left eyes obtains the light from different pixels respectively, near the human eye light is still stronger, thereby improves the brightness of image that the user sees.If the position up and down of eyes of user changes, do not face display, then open other small light source, close previous small light source, light intensity is still higher near two of users.Under the stereo display state, any moment all have only seldom a part of light source work, so power consumption is lower.

The invention has the beneficial effects as follows, by having used the simple relatively small light source of low-power consumption, high brightness, driving circuit, reduced display power consumption and simplify the structure, and owing to control light preferably, improve brightness effectively, and after customer location changed, light can change direction, to adapt to new position.

Description of drawings

Fig. 1 is the principle schematic of automatic stereoscopic display device scheme

Among the figure, the 1st, small light source, the 2nd, convergent lens comprises liquid crystal panel, organ timbering lens elements such as (or slit, long shading strip or their combinations) in 3, and the 4th, customer location.Wherein 2 and 3 also can combine, between the two can be without any the gap, even on a block element, not only make convergent lens but also make organ timbering lens (or slit, long shading strip or their combination).Lens or lens combination that any satisfied focusing requires can in order to reduce volume or to reduce cost, can select Fresnel Lenses (Fresnel) as convergent lens as convergent lens.

The light that sends by small light source through convergent lens and organ timbering lens (or slit, long shading strip or their combination) after, radiation direction obtains good control, obvious near the eye than other position brightness height, images of left and right eyes can only be seen image separately respectively, and the image that two eyes are seen is inconsistent.

But small light source 1 is made of the optical element of any independent regulation duty, independent switch, common have light emitting diode (LED), organic electroluminescent LED (OLED), miniature bulb, liquid crystal cell, dmd chip, a LCOS chip, perhaps any other small-sized emitting components.Every group of small light source also can be formed by a plurality of element common combinations, also can be the part of large tracts of land light source.

Embodiment

The whole implementation process is divided into several steps, at first tentatively determines the parameter of each element, uses software optimization then, seeks optimum solution, finishes design.

First step initial option small light source or liquid crystal display.Characteristic according to performance, parameter and the liquid crystal display of small light source, optical property, physical construction, the electric index of estimating display can meet the demands, whether the lighting angle of the brightness of display, color, light source is suitable etc., selects small light source or liquid crystal display according to the result.

Second step is according to the requirement of stereo display, and the pixel that two eyes are seen is different, and each components and parts of general design are tentatively determined the parameter of post lens (or slit or shading strip or their combination) and convergent lens.

The 3rd step was an initial value with the The above results, consider various factors, such as the geometry parameter of the variation of customer location, each components and parts, optical characteristics, mechanical property, tolerance, aberration, processing characteristics, price, technology, Installation And Calibration or the like, by computation optimization and analog simulation, and repetition test, determine the optimal parameter of light path and components and parts, finish design.

Claims

1, a kind of optical plan of automatic stereoscopic display device, solve the problem of high power consumption of traditional automatic stereoscopic display device and low-light level by back light and the optical device that changes three-dimensional display, it is characterized in that: but a plurality of independent regulation duties adopted, the small light source of switch is as back light separately, effectively make up with convergent lens, the light that light source sends is controlled, allow light through post lens (or slit or long shading strip or their combination), elements such as liquid crystal panel, make user two soon to different pictures, produce stereoscopic sensation, make also that simultaneously the light that sends converges near the eyes of user, improve the brightness of image that the user sees, and effectively reduce the power consumption of display.In order to satisfy the needs that the user watches at diverse location, can change the duty of different small light sources.

2, back light according to claim 1 is characterized in that: back light is arranged in together by small light source more than 2 groups or 2 groups and constitutes; But small light source is made of the optical element of any independent regulation duty, independent switch, common have light emitting diode (LED), organic electroluminescent LED (OLED), miniature bulb, liquid crystal cell, dmd chip, a LCOS chip, perhaps any other small-sized emitting components, every group of small light source also can be formed by a plurality of element common combinations, also can be the part of large tracts of land light source, also can have only an element.

3, convergent lens according to claim 1, it is characterized in that: behind these lens and post lens (or slit or long shading strip or their combination), obviously stronger near the eyes of user than the light of other position, any lens or lens combination that satisfies this requirement can be as convergent lens, in order to reduce volume, can select Fresnel Lenses (Fresnel) as convergent lens.Also post lens (or slit or long shading strip) and convergent lens can be combined, between the two can be without any the gap, even on a block element, not only make convergent lens but also make organ timbering lens (or slit, long shading strip or their combination).

4, according to claim 1, in order to satisfy the needs that diverse location is watched, by regulating different small light sources, make the user, two images that can both obtain becoming clear in different positions.